A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5975-00-102-9639
NSN 5915-01-606-8296
NSN 5915-01-219-9088
NSN 5950-00-073-2292
NSN 5998-01-546-3630
NSN 6145-01-316-8089
NSN 5990-01-288-7393
NSN 6135-00-269-5843
NSN 7035-00-978-7837
NSN 5905-01-417-6136
NSN 5950-00-471-5194
NSN 7035-01-227-2546